1) Coral-colored 2) Corallike 3) Light yellowish-red 4) Like many reefs 5) Pinkish-yellow 6) Reddish-yellow 
• (n.) A submarine, semicalcareous or calcareous plant, consisting of many jointed branches. • (n.) Formerly any slender coral-like animal; -- sometimes applied more particulary to bryozoan corals. • (a.) Composed of corallines; as, coralline limestone.
Cor'al·line adjective [ Confer Latin corallinus coralred.] Composed of corallines; as, coralline limestone. 
composed of coral or having the structure of coral: coralline limestone. · corallike. · coral-colored; reddish-yellow; light yellowish-red; pinkish-yellow.